Manual bicycle aeroplane



MANUAL BICYCLE AEROPLANE Filed July 6 1923 ntsd 2a use human m MARTINEZ, or roar ARTHUR, TEXAS.

MANUAL BICYQLE AEROPLANE.

Application filed July 6,

To all whom it may concern:

Be it lgn ewn that I, ELIAS MARTINEZ, a citizen of Mexico, residing at Port Arthur n the n y of Je fers n and State 0.-

. Texas, invente certain new and use- Improvements'in Manual. Bicycle Aeroplanes'efwhich the f llowing is a specification.

This nvention relates. generally to ma.

19 nautical machines and may be embodied in an aeroplane mounted on a bicycle frame for manual operation, as here shown, orthe features f dem u t le wings may be em- .bod e any aeroplane. lproav- The invention has. for an object the v n o a novel. machine of this type i g ustaining wings which can be readlly demounted til he folded along the machine when not in'use.

.tion, and of the objects and advantages thereof, reference willbe had to the following description and accompanying drawingsyand to the appended c aims in which the various novel features of the invention at line 55 of Fig. 4.

Ashore emb died my. improved machine comprises a frame 10 such as commonly rovided in bicycles and which is supports on the front and rear wheels '11 and 12 respeceo tively, the, front wheel'beingjdirigible bythe usual handle 13. Upon the frame 10 is v a ,seat 144 for the operator. .Suitably journaled in the frame, between the two" wheels, is .a stub shaft 16 on'which is fixed a pair of-crank pedals 17 for rotation and which has also rigid thereon a bevel ear 18- meshing with a. bevel pinion 19 on t e rear end-of a forwardly and upwardly extending shaft 20 which has a'helical propeller 2l on its forward end adapted for rotation bythe feet ofthe operator as will be understood. This shaft 20 is suitablysupported by the frame 10 and passes between t e legs of the steering fork 11' which are spaced s'ufii- B6 ciently' far apart to accommodate it. I

bolts whic Fillfurther comprehension of the. invent PAT-Eur oFFics.

1923. Serial No. 649,836.

, I also provide a pair of transversely extending wings or sustaining planes 25 which are s 'aced laterally apart from one another a su cient distance to allow of the body of the operator being accommodated therebetween. These Wings are demountable so .that they may be readily hung to the sides of the frame when the machine 1s traveling it along a road.

To sup ort the wings I provide slidable are adapted. to be moved laterally of the machine into sockets 28 on the undersides of the wings. As here shown these bolts are carried in tubular members29 extending transversely of the machine one behind theseat 14 and the other near the front I I of the machine, these tubes being supported by extensions 10 from the frame 10. The bolts are indicated'at 30 and are in the form of sleeves slidable in the tube 29 and which '76 project at their outer ends into the sockets '28. Each of the latter is formed at its inner end with an enlargement 31 providing a shoulder which is engaged by. hooks 32 carried on the free ends ofresilient straps 33 riveted at one end to the bolts 30 inside the latter. Normall these hooks are drawn back within the circular confines of the bolts. The bolts have notches 34 in their forward end to accommodate the hooks. To move these hooks to locking position'I provide the plungers 36 which are slidable in the bolts and have pointed forward ends adapted to ,engage the members 33 to move the hooks 32 to locking position. I

Fixed to these plungers 36 are the transversely projecting pins- 37 I which extend through s'hort'longitudinal slots 38 in the bolts and longer longitudinal slots 39 in the tubular boltsupport 29. The outer ends of these pins project into annular recesses such as 40 in the inner faces of collars 41 surrounding the tube 39, whereby longitudinal movement ofithe collarsmoves the plungers 36. The collars: 41 are interiorly screw- '100 threaded at their forward ends, while the ends of the -tubes 29' are also exteriorly I screw-threaded. Mounted on thecollars are spring hooks 42 which are adapted'to pro ject through apertures 43- in the collars, through one of the slots 39 and engage bei hind the bolts 30 to cause the forward movement of, the collars along the tube to be im-' parted to the bolts.

The. manner inwhich this wing locking element operates is as follows: Assuming the in the inoperative position shown the right of Fig. 4;, the hook 42 is pressed 'dl'y by hand to engage behind the bolt The collar 41 is then slid along the tube the Bill; thereof, carrying with lithe bolt 30 and the plunger 38, until t is properly inserted in the socket 550 The hook42 is then released, and, fur ther forward movement of the collan il on the tube 29 carries the plunger pin 36 alone, the pin'SY passing along the slots 38. The threads on the collar finally engage the threads on the tube'29-and the collar is screwed againste flange 45 on the end of the tube thus locking the hooks 32 in position preventing'withdrawal of the bolt. "When the Wings are to be demounted the above operations are-reversed and the belts withdrawn from the sockets."

attached to the sockets to be engaged in suittollowsr 1. lnen aeronautical mach ne,

' movable hooks adapted to engageshouldered able members on the -frameto suspend the wings therefrom.

Having thus described my invention what I claim as new and desire to protect by Letters I Patent of the United States is as a pair of Wings, socket elements thereon, a vehicle, and bolts carried by said vehicle engage-in said sockets to attach the Win s to the vehicle, said bolts having transverse y Hooks 46 may be in said tubes,

adapted toelements in the sockets to hold the bolts against-displacement from the sockets.

2. In an aeronautlealmachlne, a pair of wings, socket elements thereon, a vehicle and bolts carried by saidvehicle adapted Wings, socket elements thereon, a; vehicle and bolts carried by said vehicle adapted to,- engage in said sockets to attach the wings to the vehicle, tubes slidably supporting said bolts,- said boltsbeing in the form of sleeves saidsleeves adapted to engage shouldered elements in said sockets to hold the bolts against withdrawah and plungers carried in the sleeves for moving said hooks to operative position, and collars surrounding said tubes and engagedv with said plungers 'to move the latter longitudinally in the said sleeves.

In testimony whereof I have alilxed my signature. I

, Erin-is MARTINEZ.

resilientlymounted hooks in 

